//----------------------【DrawFilledCircle()函数】------------------------
// 描述:自定义的绘制函数,实现了实心圆的绘制
//------------------------------------------------------------------------
void DrawFilledCircle(Mat img, Point center)
{
int thickness = -1;
int lineType = 8;
circle(img,
center, //圆心由点center定义
WINDOW_WIDTH/32, //圆的半径
Scalar(0, 0, 255), //显示红色
thickness, //线粗为-1,因此绘制的圆是实心的
lineType);
}